In a medium-size bowl, mix the 1 tablespoon of olive oil, vinegar and mustard. In another bowl combine the egg, flour, salt and pepper. Add the vinaigrette. While beating, add the milk, a little at a time. Add the string beans. Heat the oil in a medium-size skillet, over a medium heat. Place the tortitas de ejotes, in patties 2 inches in diameter, in the skillet. Cook them until golden brown on both sides. Serve at once.
c.1997, M.S. Milliken & S. Feniger, all rights reserved